10 Best Fifth Wheel Locks 2026 in the United States

The BOYISEN 5th Wheel King Pin Lock stands out due to its solid steel construction, which offers robust anti-theft protection for RVs, container trailers, and campers. This heavy-duty lock is designed with ease of use in mind, featuring a convenient handle and an outward-facing turn cylinder, making it simpler to lock and unlock.

The inclusion of three unique keys ensures you have backups and eliminates the worry of others having the same key, thanks to the specially designed blossom lock mechanism that provides enhanced security against break-ins. The lock's high visibility, with an attached warning tag, acts as a reminder to remove it before hitching, which can be particularly handy.

Weather resistance is another crucial aspect, and the solid steel material promises durability, making it suitable for various weather conditions and ensuring a long lifespan. The lock's universal fit makes it versatile for use with different vehicles like RVs, boats, and campers, making it a practical choice for multiple users, including trucking companies and RV dealers.

The Andersen Ultimate 5th Wheel Connection Lock is built with ultra-high security in mind, featuring a proprietary design that fits all versions of the Andersen Ultimate 5th Wheel connection. Its heavy-duty construction utilizes 3/16-inch fully welded cold rolled steel, making it highly resistant to bolt cutters and crowbars. The bright yellow powder coat finish serves as a deterrent to potential thieves.

The Trimax puck lock included is a hidden-shackle padlock designed to prevent theft, emphasizing the lock's security aspect. This product is particularly suitable for users looking to secure their fifth-wheel trailer with a robust and visible lock mechanism.

Its dimensions of 11.5 x 4.5 x 7 inches ensure compatibility with most fifth-wheel connections, and the steel construction guarantees durability and strength. The included components, such as the Trimax puck lock and two keys, add convenience and value to the purchase. If you need a sturdy and secure lock for your Andersen Ultimate 5th Wheel connection and prioritize security above all, this product is a worthy consideration.

The AMPLock U-LPCVR Heavy Duty 5th Wheel Lock is a robust security solution for travel trailers. It's constructed from high-quality stainless steel and cast iron, making it extremely durable and resistant to tampering. The lock features a patented cylinder lock and a unique conical design that prevents traction with chains and modified hitches, enhancing security when your trailer is unhitched.

Weighing in at 10 pounds, it acts as a significant deterrent to theft through cutting or other tampering methods. The lock is designed for easy use with a push-and-lock system that simplifies installation and removal, which is handy for frequent use. The product dimensions (7 x 6 x 8.5 inches) suggest it should be compatible with most fifth wheel setups, although checking specific compatibility is recommended.

One drawback could be its weight, which might make it cumbersome for some users to handle. Additionally, while it is highly resistant and durable, there's no specific mention of weather resistance, which might be a consideration for outdoor storage. With a strong customer rating of 4.6 out of 5 stars, it is well-regarded for its reliability and security. This lock is particularly suitable for those needing heavy-duty protection for commercial trailers and semi-trailers.